Re: ARP clinet look program

thnaks,,
now i need help to write program for simple route command

On Mar 5, 9:51 am, Lew Pitcher <lpitc...@xxxxxxxxxxxx> wrote:
On March 4, 2009 23:33, in comp.unix.programmer, Rohan Dhond

(rohan.dh...@xxxxxxxxx) wrote:
Hi all,

I am looking for guidance to write a program that will give me the mac
address of machines connected to my router.
./hw4i1a some_hostname
Host 138.28.58.3 has Ethernet Address aa:bb:cc:dd:ee:ff

ISTM that your requirement breaks down into a program of 4 parts:

1) parse commandline to retrieve hostname
2) perform DNSlookupon hostname to obtain IP address
3) performARP"WHO HAS" to obtain MAC Address
4) report results

Note that you cannot obtain the MAC address for IP addresses outside of your
subnet with this method. To do that, you will need aclient/server
approach, with a server on each system that you wish to query (routers do
not pass along MAC addresses, and some intervening networks may not even
support such a concept).

Now, all you have to do is determine the proper logic to implement each of
those steps.

HTH
--
Lew Pitcher

Master Codewright & JOAT-in-training | Registered Linux User #112576http://pitcher.digitalfreehold.ca/ ; | GPG public key available by request
----------      Slackware - Because I know what I'm doing.          ------

.

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